The Only Exception by Paramore is featured in Britney/Brittany, the second episode of Season Two. It is sung by Rachel with New Directions Girls.

Rachel sings this song as an apology to Finn for making him choose between her and football. During the performance, it shows her looking at Finn in the hallways. She sees him talking to Brittany and Santana, but he ditches the two girls for Rachel, which makes her smile. Mercedes, Quinn and Santana assist her with back-up in The Choir Room as they watch her sing. It also shows Will getting his old car back and watching Carl and Emma together with a sad expression.

It's the only song in the episode that doesn't follow the Britney Spears theme, much to Will's delight.